Table 1.

Beverage characteristics

Group	Composition	pH (s.d.)	TA (s.d.)
Coca-Cola Classic (Coke)	Carbonated water, High fructose corn syrup, Caramel colour, Phosphoric acid, Natural flavours, Caffeine	2.49 (.006)	9.57 (1.87)
Diet Coke	Carbonated water, Caramel colour, Aspartame, Phosphoric acid, Potassium benzoate, Natural flavours, Citric acid, Caffeine	3.16 (.015)	9.11 (1.63)
Red Bull	Water, Sucrose, Glucose, Sodium citrate, Taurine Glucuronolactone, Caffeine, Inositol, Niacinamide, Calcium-Pantothenate, Pyridoxine HCL, Vitamin B12	3.32 (.006)	28.99 (4.17)
Tap Water (Water)	Water, various minerals	7.55 (.010)	----

pH: potential (power) of hydrogen, TA: titratable acidity, s.d.: standard deviation